Secondary battery



(NoModel.)

H. LAMPBRT, Jr. SEGONDARYBATTERY.

No. 437,848. Patented Oct. '7, 1890.

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UNITED STATES PATENT OFFICE.

HENRY LAMPERT, JR., OF CHICAGO, ILLINOIS.

SECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 437,848, dated October7, 1890.

Application filed January 3l, 1889.

To all whom t may concern:

Be it known that I, HENRY LAMPERT, .I r., of Chicago, in the county ofCook and State of Illinois, have invented a certain new and usefulSecondary Battery; and I do hereby declare that the following is a full,clear, and eXact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specilication.

This invention relates to an improvement in secondary batteries; and itconsists in the matters hereinafter described, and pointed out in theappended claims.

In the accompanying drawings, illustrating the manner in which myimproved method may be carried ont, Figure l is a plan or face View ofone of the plates of a storage-battery adapted for connection in thenovel manner proposed by me. Fig. 2 is a side view of said plate. Fig. 3is avertical section of a portion of my improved battery upon line 3 3of Fig. l, showing the manner of securing the plates together. Figs. 4to 9 are fragmentary sectional views showing other forms in which theplates may be made.

As shown in said drawings, A A are a series of plates of astoragebattery, each of said plates being provided with a lateralprojection or hub A. The hubs A are provided with apertures or openin gsextending through the hubs and plates, said openings being constructedto receive the ends of the hubs upon the adjacent plates and forming atubular passage when the plates are put together. As shown in thedrawings, the hubs A are provided with rabbets c to receive the ends ofthe hubs of adjacent plates, and with inwardly-tapered recesses c',extending from the rabbets to the outer ends of t-he hubs, so that whenthe plates are put togethera series of projections a2 d2 are formedwithin the tubular opening formed by the recesses of the severalhubs.The several plates when placed together in the position shown in thedrawings, Fig. 3, are connected by pouring molten metal into the tubularrecess or opening formed by the apertures of the several hubs, thesolidified metal by its engagement with the inwardlyprojecting parts ofthe hubs holding the plates securely together, and thereby forming astrong and permanent connection between the same.

Serial No. 298,191. (No model.)

The plate A2, which forms the end plate of the series, is provided wit-ha hub A3, having a recess a3, which does not extend through the plate,so that when the several plates are placed together the closed recess a3will form a tight bottom to the tubular passage, thereby preventing theescape of molten metal when poured into the upper part of said passage.rIhe use of the plate A2 thus formed has the advantage of renderingunnecessary any special device for closing the aperture in the lowerplate at the time of pouring the metal; but as far as the main featuresof my invention are concerned the employment of a plate thus formed isnot strictly necessary.

B indicates a tubular extension or thimble shaped like the hubs A A',and provided with a rabbet b and a tapered recess b', said rabbet beingarranged to engage the hub A on the adjacent plate A. The said thimble Bserves to form a shank, by which the electric conductor may be connectedwith the plates.

C indicates the metal rod or core of fusible metal, by which the severalplates are connected in the manner above described. Said rod or core isnot intended to be necessarily of sufficient strength or rigidity tosupport the several connected plates, but is intended mainly as a tie tohold the hubs of the several plates in contact by its engagement withsaid hubs, thereby acting, together with said hubs, to rigidily connectthe plates.

D, Fig. 3, indicates a metal rod, preferably of copper, which maybeinserted in the tubular opening before the inetal C is poured therein,and to which the conductor-wire leading to the battery-plates isattached. Said rod D, when present, not only enables an electricconductor to be easily connected with the plates, but by extendingthrough or past the several plates affords better electrical connectionwith the plates.

In Fig. 4 is shown a somewhat different construction in the platesadapted for connection in the manner above described. In this case E Eindicate plates, which are provided with hubs E', having internalrecesses e of cylindric form, and rabbets e to receive the hubs E of theadjacent plates, and internal ribs e2, which by positive engagement withthe metal core F, formed by pouring molten metal into the tubularpassage formed bythe to apertures g.

several apertures, in the manner described, positively hold the platesfrom relative movement or separation.

Fig. shows stillanother form in which the 5 plates may be made, whereinthe apertures of l5 between the parts in pouring the molten metal. Theconical inner surfaces of the hubs, together with the end surfacesthereof, engage themetal core H, formed by pouring` molten metal intothe tubular passage formed zo by the several apertures in such manner asto prevent any shifting or endwise movement of the plates with referenceto the core, so

that the latter holds the same firmly together in the manner clearlyillustrated in the drawings.

In Fig. 6 is shown a-series of plates I I I, having conical hubs I I',having apertures formed through them in the saine manner as beforedescribed. Said apertures, however,

3o have conical parts i, adapted to receive the upper ends of the hubsof adjacent plates, and oppositely-inclined conical parts 1", making theapertures smaller in diameter at the middleparts than elsewhere. Thisconstruc- 3 5 tion also givesa positive engagement of the plates withthe fusible metalfcore J with the same advantages above pointed out. Itis V not, however, essential that the apertures of all or any of theplates should contain inter- 4ofnal. projections adapted to engage thefusible metal core, inasmuch as the plates may be held from separationor movement upon the core by positive engagement of the end plates ofthe series with the core, or when the plates are of fusible metal andthe metal to form the core is poured into the tubular passage throughthe plates when heated to a temperature higher than that of thefusing-point of the plates a'fused joint will be formed between theplates and the core, and said. parts will'be permanently and stronglyunited.

This method of uniting the plates, in the case of plates used forstorage-batteries, is preferred, for the reason that it forms continuouselectrical connection or union between the plates and the corecalculated to perfectly transmit the electric current in the operationof the battery.

In Fig. 7 is shown a construction wherein 6o plates K K K are providedwith hubs K,

having cylindric recesses or openings 7c and rabbets lo to receive thehubs of adjacent plates. L is a core of fusible metal lling thecylindric passage formed by the several recesses kwhen the parts areplaced together and united to the several plates by fusing, so

that the metal of the plates and core is practically continuous afterthe parts are united.

Fig. 8 illustrates a series of plates M M M, having hubs 'm m, providedwith cylindric apertures m and without any rabbets or interfittingsurfaces on the two parts, the ends of the hubs on the several platesbeing merely placed against the adjacent plates and held in thisposition by a clamping device or otherwise duringthe time the metal isbeing poured into the tubular passage formed by the several apertures m.In this instance, also, the fusible core N is formed by pouring themetal at a temperature higher than the fusing-point of the metalcomposing the plates, so that fused joints are formed in the same manneras before described.

In Fig. 9 I have shown a construction wherein a series of plates areunited by positive engagement of the end plates of the series with thefusible metal core. In this instance O O are intermediate plates of theseries, and P Q are end plates of the series. The plates O O have hubsO', provided with cylindric apertures 0. The bottom plateP is providedwith a hub p, having a closed recess p', larger at its bottom than atits top. The upper plate Q has a hub Q', provided in its ower part withan opening q o f the same size ts the opening o, and in its upper partwith a larger recess q. The plug R of fusible metal, in a constructionof this kind, has enlarged heads r r at its opposite ends, by which theparts are positively held together.

I claim as my inventionl. The herein-described storage-battery,

IOO

consisting of apertured plates arranged side Y.

by side with the apertures in alignment, and a filling of fusible metalvwithin said apertures rigidly securing the plates together.

2. The herein -described storage-battery, consisting of plates arrangedside by side and provided with apertured hubs registering with eachother, and a lling of fusible metal within the apertures of the hubs.

3. The herein-described storage-battery, consisting of plates arrangedside by side and provided with hubs registering with each other, eah ofsaid hubs havinga tapered recess, and a rabbet at one side to receivetheY Witnesses:

C. CLARENCE POOLE, GEO. W. Hrecnvs, Jr.

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